New member here.... now the owner of an 87 z28 w/ lt1 and t56... etc. I just bought the car, there is a hesitation to where it seems the power cuts in and out when its between like 2k-2500 rpm at part throttle... if you goose it or let off then get back on it it will stop for a bit.... the sensors have pretty much been gone over.. maybe a fuel issue?

 

Sounds like what was goin on when my opti crapped out, about a weak after buying the car. It had the well known intake manifold leak, so the dealership actually washed the engine in detailing. Is everything under the hood nice and clean? The good ole optispark hates water.